This extended glass adapter has a taper Inner joint with a sealed on lower tube extending 150mm below the grind.
Having the same O.D. tubing on both ends of the grind.Laboy glass are all made of high-quality borosilicate glass and made by hand-blowing to ensure uniform wall thickness.

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Laboyglass, a good-reputation supplier of hand-blowing lab glassware for synthesis in organic chemistry to customers worldwide,mainly service lab market.